Research On Inter-layer And Inter-circle Transition Of Multi-Layer Winding Of Wire Rope In The Hoisting System Of The Ultra-deep Mine

At present,shallow underground mineral resources are gradually depleted in our country.For the development of our country’s economy,deeper reservoir development(mining depth> 1500 m)has become a major national strategy.Currently,in our country mature mine hoisting equipment and theory are single rope winding hoist and multi-rope friction hoist,which are mainly used for mining within 1000 m depth of the shallow wells.The equipment of winding hoist that the diameter of the wire rope and reel will increase and multi-rope friction hoist that the stress amplitude of rope will increase with the increase of mining depth,so the exist equipment cannot meet the requirement of ultra-deep.In our country the existing hoisting equipment and theory do not meet the challenge caused by heavy load,high speed,high inertia,and high security requirements of ultra-deep well,and this is why ultra-deep well lifting equipment research is needed to carry out vigorously.The use of multi-wire rope multi-point multi-layer hoisting is to achieve ultra-deep main to enhance the effective type.In the multi-rope multi-point multi-layer winding process,inter-layer transition and inter-circle transition behavior will happen,so inter-layer transition device is needed.In this paper,the used research methods included theoretic analysis and simulation test.The start and termination of this research are the run smooth of wire rope in the ultra-deep mine multi-layer winding hoisting.Inter-layer transition and inter-circle transition will be studied and researched,which are the key impact factors of ultra-deep well mine lifting system running.This paper consists of the following parts:(1)Object of study is interlayer transition device of multi-layer winding in ultra-deep mine.For the purpose of the wire rope transition smoothly in the multi-layer winding,the calculation formula of the interlayer transition device from one to two and two to three layers is deduced and layout scheme on the groove is determined.The regular pattern of the inter-layer transition movement is revealed and the basic parameters needed to design the inter-layer transition device is got.(2)Object of study is the design inter-layer transition device.Combined with the parameters of the ultra-deep mine test bench,the interlayer transition rope movement characteristics is studied,the acceleration regular pattern caused by the change of the winding radius during the transition between the layers and the inter-circle is revealed and the influence of these acceleration on the tension of the wire rope during the lifting process is further analyzed.(3)Based on the structural design of the interlayer transition device and the parameters of the test bed,the design parameters of the inter-layer transition device are calculated.The relative coordinate method and the finite element discrete technique are used to establish the rigid and flexible coupling multi-layer winding of the lifting system through the three-dimensional design and the multi-body dynamics simulation software.After the dynamic model is studied,the change of the acceleration rate of the container,the acceleration of the instantaneous lifting vessel and the change of the tension of the rope are revealed under the action of the interlayer transition device.Finally that wire rope during the operation is hoisted smoothed with the inter-layer transition device designed under the parameters of the test bed is verified.In this paper,it is of great value for the design of the multi-layer intercalation transition device in the ultra-deep mine,which reduces the vibration of the wire rope during the lifting process and improves the smoothness of the wire rope when it is wound at multiple layers.A viable research method is provided for multi-layer winding lifting system.